I have a 100lb doberman, Toby, the love of my life. Toby has several different health issues as he's a blue so skin problems, joint degenerative etc. Needless to say we take lots of trips to the vet to make sure Toby is in mint condition and comfortable so he can live a good quality of life
That being said we live in South Texas and have BUGS GALOUR! So my vet gives me nexgaurd...OUCH EXPENSIVE but apparently very effective. So we have been using nexguard for 3 months...no bugs but at the expense of Toby completely losing his appetite. We have had him evaluated and there is nothing else causing this and the symptoms began about a month after beginning Nexguard. Needless to say we are taking him off of nexguard but in the meanwhile I started snooping around blogs to see if anyone else has had this experience as there is so little known about it. Apparently there are lots of doggie mommies that have experienced these side affects and also vomitting up a yellow stomach bile more frequently than just on occasion. It makes me sad that studies are so less important when it comes to medications we give our pets.
My summary, I love my dog, I do NOT trust this product and will never again use it on my dog. I did a lot of research after this issue and found out that often times giving flea and tick every month is completely unnecessary and we are in fact over medicating our dogs. Therefore I'm moving to every other month to every three months and will just bath with a flea and tick hypoallergenic shampoo in between. I hope this helps. My advice...read not what the adds are but what other owners are saying about a product before you try it. I wish I had because poor Toby's stomach is very unhappy and this could have been avoided, my fault.